美股收高，标普创新高，金银刷新纪录

Group 1 - The US stock market closed higher on Tuesday, with the S&P 500 index reaching a new closing high, driven by better-than-expected Q3 economic growth data [2] - The Dow Jones Industrial Average rose by 79.73 points (0.16%) to 48,442.41 points, while the S&P 500 increased by 31.30 points (0.46%) to 6,909.79 points, and the Nasdaq gained 133.02 points (0.57%) to 23,561.84 points [2] - Large-cap tech stocks performed strongly, with Nvidia up 3.01%, contributing significantly to the S&P 500's performance, while other major tech companies also saw gains [2] Group 2 - Chinese concept stocks showed mixed performance, with Alibaba up 0.18% and Pinduoduo up 0.13%, while NIO fell by 2.20% and Tencent Holdings ADR dropped by 1.70% [3] - The US GDP for Q3 grew at an annualized rate of 4.3%, exceeding economists' expectations of 3.3%, primarily driven by consumer spending [3] - The consumer confidence index for December fell to 89.1, the lowest level since April, indicating growing concerns about employment and income prospects [3] Group 3 - The 10-year US Treasury yield closed at 4.171%, while the 2-year yield rose by 3.81 basis points to 3.544% [4] - The Treasury auctioned $70 billion in 5-year notes with a bid-to-cover ratio of 2.35, below the historical average, indicating potential market concerns [4] - Silver prices continued to rise, reaching a new historical high, with spot silver up 3% to $71.06 per ounce, reflecting a 145% increase for the year [4] Group 4 - International oil prices saw a slight increase, with New York crude futures closing at $58.38 per barrel [5]